(1/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/20/2026 4:07 PM America/Puerto_Rico.
Valid through 8/21/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 202007
cwfsju
expires:202608210915;;067831
coastal waters forecast
national weather service san juan pr
407 pm ast thu aug 20 2026
puerto rico and the u.s. virgin islands waters
seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the average
highest 10 percent of the waves.
amz712-210915-
coastal waters of northern puerto rico out 10 nm-
407 pm ast thu aug 20 2026
...small craft should exercise caution...
.tonight...east winds 15 to 20 knots with gusts up to 30 knots,
diminishing to 10 to 15 knots with gusts up to 25 knots late this
evening and overnight. seas 3 to 5 feet, occasionally to 6 feet.
wave detail: northeast 4 feet at 7 seconds. isolated showers.
.friday...east winds 10 to 15 knots, increasing to 15 to 20 knots in
the afternoon. gusts up to 30 knots. seas 3 to 4 feet, occasionally
to 5 feet. wave detail: northeast 4 feet at 7 seconds.
.friday night...east winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. seas 3 to 5 feet, occasionally to 6 feet.
wave detail: east 4 feet at 5 seconds and northeast 4 feet at
8 seconds.
.saturday...east winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. seas 3 to 4 feet, occasionally to 5 feet. wave
detail: northeast 4 feet at 7 seconds.
.saturday night...east winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. seas 3 to 4 feet, occasionally to 5 feet.
wave detail: northeast 4 feet at 7 seconds. scattered showers.
.sunday...east winds 10 to 15 knots with gusts up to 20 knots,
increasing to 15 to 20 knots with gusts up to 30 knots in the
afternoon. seas 3 to 4 feet, occasionally to 5 feet. wave detail:
northeast 4 feet at 7 seconds. scattered showers in the morning.
.sunday night...east winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. seas 3 to 4 feet, occasionally to 5 feet.
scattered showers.
.monday...east winds 10 to 15 knots, increasing to 15 to 20 knots in
the afternoon. seas 3 to 4 feet, occasionally to 5 feet. scattered
showers in the morning.
.monday night...east winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. seas 3 to 4 feet, occasionally to 5 feet.
.tuesday...east winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. seas 3 to 4 feet, occasionally to 5 feet.
.tuesday night...east winds 10 to 15 knots. seas 4 to 5 feet,
occasionally to 6 feet. scattered showers.
$$
(2/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/20/2026 4:07 PM America/Puerto_Rico.
Valid through 8/21/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 202007
cwfsju
expires:202608210915;;067836
coastal waters forecast
national weather service san juan pr
407 pm ast thu aug 20 2026
puerto rico and the u.s. virgin islands waters
seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the average
highest 10 percent of the waves.
amz735-210915-
coastal waters of southern puerto rico out 10 nm-
407 pm ast thu aug 20 2026
...small craft should exercise caution...
.tonight...east winds 15 to 20 knots, diminishing to 10 to 15 knots
after midnight. gusts up to 30 knots. seas 3 to 4 feet, occasionally
to 5 feet. wave detail: east 4 feet at 6 seconds. isolated showers
late.
.friday...east winds 10 to 15 knots, increasing to 15 to 20 knots in
the afternoon. seas 3 to 4 feet, occasionally to 5 feet. wave
detail: east 4 feet at 7 seconds.
.friday night...east winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. seas 3 to 4 feet, occasionally to 5 feet.
wave detail: east 4 feet at 7 seconds.
.saturday...east winds 10 to 15 knots with gusts up to 20 knots.
seas 3 to 4 feet, occasionally to 5 feet. wave detail: east 4 feet
at 7 seconds.
.saturday night...east winds 10 to 15 knots with gusts up to
25 knots. seas 3 to 4 feet, occasionally to 5 feet. wave detail:
east 4 feet at 6 seconds.
.sunday...east winds 10 to 15 knots with gusts up to 20 knots. seas
3 to 4 feet, occasionally to 5 feet. wave detail: east 4 feet at
6 seconds.
.sunday night...east winds 10 to 15 knots with gusts up to 25 knots.
seas 3 to 4 feet, occasionally to 5 feet.
.monday...east winds 10 to 15 knots. seas 3 to 4 feet, occasionally
to 5 feet.
.monday night...east winds 10 to 15 knots. seas 3 to 4 feet,
occasionally to 5 feet.
.tuesday...east winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. seas 3 to 4 feet, occasionally to 5 feet.
.tuesday night...east winds 15 to 20 knots. seas 3 to 4 feet,
occasionally to 5 feet.
$$
(3/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/20/2026 4:07 PM America/Puerto_Rico.
Valid through 8/21/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 202007
cwfsju
expires:202608210915;;067837
coastal waters forecast
national weather service san juan pr
407 pm ast thu aug 20 2026
puerto rico and the u.s. virgin islands waters
seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the average
highest 10 percent of the waves.
amz741-210915-
mona passage southward to 17n-
407 pm ast thu aug 20 2026
...small craft should exercise caution...
.tonight...east winds 15 to 20 knots with gusts up to 30 knots. seas
4 to 6 feet, occasionally to 8 feet. wave detail: east 6 feet at
7 seconds. scattered showers early this evening.
.friday...east winds 15 to 20 knots with gusts up to 30 knots. seas
4 to 6 feet, occasionally to 8 feet. wave detail: east 6 feet at
7 seconds.
.friday night...east winds 15 to 20 knots with gusts up to 25 knots.
seas 4 to 6 feet, occasionally to 8 feet. wave detail: east 5 feet
at 7 seconds.
.saturday...east winds 10 to 15 knots with gusts up to 25 knots.
seas 3 to 5 feet, occasionally to 6 feet. wave detail: east 5 feet
at 7 seconds. scattered showers in the afternoon.
.saturday night...east winds 10 to 15 knots with gusts up to
25 knots. seas 3 to 5 feet, occasionally to 6 feet. wave detail:
east 5 feet at 7 seconds. scattered showers in the evening.
.sunday...east winds 15 to 20 knots, diminishing to 10 to 15 knots
in the afternoon. seas 3 to 5 feet, occasionally to 6 feet. wave
detail: east 5 feet at 6 seconds.
.sunday night...east winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. seas 3 to 5 feet, occasionally to 6 feet.
.monday...east winds 15 to 20 knots, diminishing to 10 to 15 knots
in the afternoon. seas 3 to 5 feet, occasionally to 6 feet.
scattered showers in the afternoon.
.monday night...east winds 10 to 15 knots. seas 3 to 5 feet,
occasionally to 6 feet. scattered showers.
.tuesday...east winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. seas 3 to 5 feet, occasionally to 6 feet.
.tuesday night...east winds 15 to 20 knots. seas 4 to 5 feet,
occasionally to 6 feet.
$$
(4/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/20/2026 4:07 PM America/Puerto_Rico.
Valid through 8/21/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 202007
cwfsju
expires:202608210915;;067838
coastal waters forecast
national weather service san juan pr
407 pm ast thu aug 20 2026
puerto rico and the u.s. virgin islands waters
seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the average
highest 10 percent of the waves.
amz742-210915-
coastal waters of northwestern puerto rico out 10 nm-
407 pm ast thu aug 20 2026
.tonight...east winds 10 to 15 knots, diminishing to 5 to 10 knots
after midnight. seas 2 to 3 feet. wave detail: northeast 3 feet at
6 seconds. scattered showers early this evening.
.friday...east winds 5 to 10 knots, becoming northeast 10 to
15 knots in the afternoon. seas 2 to 3 feet. wave detail: northeast
3 feet at 7 seconds and southeast 2 feet at 6 seconds. scattered
showers in the afternoon.
.friday night...east winds 10 to 15 knots with gusts up to 25 knots.
seas 2 to 4 feet, occasionally to 5 feet. wave detail: east 3 feet
at 6 seconds.
.saturday...northeast winds 5 to 10 knots. seas 2 to 3 feet. wave
detail: northeast 2 feet at 6 seconds and southeast 1 foot at
5 seconds. numerous showers in the afternoon.
.saturday night...east winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. seas 2 to
3 feet. wave detail: east 2 feet at 6 seconds.
.sunday...northeast winds 5 to 10 knots. seas 2 to 3 feet. wave
detail: northeast 2 feet at 6 seconds and south 1 foot at 5 seconds.
scattered showers in the afternoon.
.sunday night...east winds 5 to 10 knots. seas 2 to 3 feet.
.monday...east winds 5 to 10 knots, becoming northeast 10 to
15 knots in the afternoon. seas 2 to 3 feet. numerous showers in the
afternoon.
.monday night...east winds 10 to 15 knots. seas 2 to 3 feet.
scattered showers.
.tuesday...east winds 5 to 10 knots. seas 2 to 3 feet. scattered
showers in the afternoon.
.tuesday night...east winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. seas 2 to 4 feet, occasionally to 5 feet.
$$
(5/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/20/2026 4:07 PM America/Puerto_Rico.
Valid through 8/21/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 202007
cwfsju
expires:202608210915;;067839
coastal waters forecast
national weather service san juan pr
407 pm ast thu aug 20 2026
puerto rico and the u.s. virgin islands waters
seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the average
highest 10 percent of the waves.
amz745-210915-
coastal waters of southwestern puerto rico out 10 nm-
407 pm ast thu aug 20 2026
...small craft should exercise caution...
.tonight...southeast winds 15 to 20 knots with gusts up to 25 knots,
becoming east 10 to 15 knots with gusts up to 25 knots late this
evening and early morning, then diminishing to 5 to 10 knots late.
seas 2 to 3 feet. wave detail: southeast 2 feet at 5 seconds and
north 1 foot at 7 seconds. isolated showers this evening.
.friday...east winds 5 to 10 knots, becoming southeast in the
afternoon. seas 2 to 3 feet. wave detail: southeast 2 feet at
6 seconds. scattered showers in the afternoon.
.friday night...east winds 5 to 10 knots. seas 2 to 3 feet. wave
detail: southeast 2 feet at 5 seconds.
.saturday...east winds 5 to 10 knots. seas around 2 feet. wave
detail: southeast 2 feet at 5 seconds. scattered showers in the
afternoon.
.saturday night...east winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. seas around
2 feet. wave detail: southeast 2 feet at 5 seconds.
.sunday...east winds 5 to 10 knots with gusts up to 20 knots. seas
around 2 feet. wave detail: southeast 2 feet at 5 seconds.
.sunday night...east winds 5 to 10 knots. seas 2 to 3 feet.
.monday...east winds 5 to 10 knots. seas around 2 feet.
.monday night...east winds 5 to 10 knots, diminishing to around
5 knots after midnight. seas 2 to 3 feet.
.tuesday...east winds 5 to 10 knots, becoming southeast 15 to
20 knots in the afternoon. seas 2 to 3 feet. scattered showers in
the afternoon.
.tuesday night...east winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. seas 2 to 3 feet. scattered showers.
$$
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